Extreme computer "case modding" community has some truly talented designers, who are as passionate about their PC cases, as MI6 wizards were about James Bond killer gadgets. In some cases (pun intended), the end product has truly radical looks and some wicked innards ready to unleash a gamer's fury upon the world...

"Virgil" by Valery Zhuk

"Age Reincarnation", by Alexander Kolesnikov

'Mirtus Communicus" by Artem Novikov

"R2D14m" by Pavel Rafalovich

"Recycle Your Computer" by Alexey Chistov

"Me Lady" by Artem Zheleznyak

"Wheel Case" by Alexander Kolesnikov

mod by Alexander Brikov

"Charged!" by Alexey Chistov

mod by Vogdan Suk

On the other side of the ocean, American case-modders are going nuts, too:

WMD
Weapons of Mass Destruction can now be a feature of any office, if you so desire.

WMD II:

via Gadgets Fosfor. They have another interesting weird mod list.

Probably the best case modding company

Best Case Scenario certainly rocks.
Here is the "Matrix Regenerator"
(there is something living inside of it...possibly)